This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A256483 #7 May 01 2015 13:12:46 %S A256483 1,3,7,12,22,30,42,61,71,88,108,126,137,154,180,206,227,249,273,297, %T A256483 324,336,368,405,434,454,465,497,520,565,594,627,655,699,722,742,750, %U A256483 807,874,890,933,945,972,1006,1020,1048,1077,1120,1164,1218,1244,1272,1338,1370,1400,1474,1488,1517,1545,1605,1627 %N A256483 a(n) = A256482(n)/2 = (A254100(n) - A003309(n+1)) / 2. %H A256483 Antti Karttunen, <a href="/A256483/b256483.txt">Table of n, a(n) for n = 1..4096</a> %F A256483 a(n) = A256482(n)/2 = (A254100(n) - A003309(n+1)) / 2. %o A256483 (Scheme) (define (A256483 n) (/ (A256482 n) 2)) %Y A256483 Column 1 of A257258. %Y A256483 Cf. A003309, A254100, A256482. %Y A256483 Cf. also A256486, A256487. %K A256483 nonn %O A256483 1,2 %A A256483 _Antti Karttunen_, May 01 2015